When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.
The rate of respiration decreases with temperature.
Transpiration decreases as air becomes drier.
What is the source of carbon that is assimilated in photosynthesis?
High soil moisture leads to decreased photosynthesis.
In boreal upland forests, low soil moisture decreases the rate of photosynthesis.
In some part of the stems, some photosynthesis may also occur.
Photosynthesis of a tree canopy is driven or influenced by
air humidity (VPD).
photosynthetically active solar radiation (PAR).
soil moisture (REW).
the total leaf area (LAI).
air temperature (T).
Carbon capture is performed by the green parts of plants via photosynthesis.
Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand.
An increment in leaf area increases also the photosynthesis of a tree stand. However, the relationship is saturating.
De-hardening in spring involves gradual re-hydration of the cells, recovery of photosynthetic capacity and a tight control of water loss.
The annual cycle of photosynthesis mainly follows
the changes in soil temperature.
the changes in air temperature.
the changes in CO2 concentration.
the changes in light.
Plants open its stomata to avoid losing too much water.
Plant closes its stomata to avoid losing too much water.
Almost half of the total biomass of a tree may be allocated to the roots.
As plants respire, they release
In general, the more carbon dioxide that is available to the plant, the faster the rate of photosynthesis - if other factors are favourable.